* Convert Svala Sorrowgrave to event system
* Scripts: replace some SetOrientation() calls with spline packets and some random changes
* Scripting/Obsidian Sanctum: Updated scripts to use Events.
* Don't allow units to enter combat upon death
* Core/SmartScripts: speedup loading/validating sai scripts from db

Before:
>> Loaded 6953 SmartAI scripts in 3543 ms

After:
>> Loaded SmartAIMgr Helpers in 4 ms
>> Loaded 6953 SmartAI scripts in 95 ms
* DB/Waypoints: Some Outlands waypoints. Mostly Blade's Edge.
* DB/Misc: Some Combat AI, Remove spawns, and aura fixes.
* DB/Misc: fixed comment in one SAI script.
* Core: Fix warnings
* DB/SAI: Fix one linking error and updated a few to use CMC "Combat Movement Control"
* Core/Movement: Fixed possible invalid memory access
* Fix typo
* Core/SmartAI: Fixed issue where ranged caster would switch to combat ready state between cast.
* Core/AI: Some code cleanup
* Core/SmartAI: Reset Actions will not be processed until creature reaches home.
* Core/SmartAI: SMART_ACTION_UPDATE_TEMPLATE will no longer ignore the target type and force the source creature (creature only) to be updated; from now on it updates the given targets to the given entry (actionparam1)
* DB/SAI: Fix an error in Bladespire Mystic SAI
* Core/Movement: Fix invalid memory access

Fix the stack implementation used in MotionMaster and added few sanity checks to ensure no underflows will be made.

Valgrind log:
 Invalid read of size 8
  at : MotionMaster::top() const (MotionMaster.h:115)
  by : MotionMaster::pop() (MotionMaster.h:91)
  by : MotionMaster::~MotionMaster() (MotionMaster.cpp:74)
  by : Unit::~Unit() (Unit.cpp:296)
  by : Player::~Player() (Player.cpp:880)
  by : WorldSession::HandleCharCreateCallback(Trinity::AutoPtr<PreparedResultSet, ACE_Thread_Mutex>, CharacterCreateInfo*) (CharacterHandler.cpp:665)
  by : WorldSession::HandleCharCreateCallback(Trinity::AutoPtr<PreparedResultSet, ACE_Thread_Mutex>, CharacterCreateInfo*) (CharacterHandler.cpp:516)
* Core/Player: Add another exception to questgiver spell casting.
* Core/Misc: Fix some static analysis issues

Fix some static analysis issues about uninitialized values. Most of them are false positives, always initialized before being accessed, while some of them are real issues spotted by valgrind too.